People do not realize that no matter how much security you can do, your email account is the most vulnerable and usually it's the starting point of all attacks.

How to be immune to 99,99% of all hacking attempts. A quick short guide. 1) Never use the same passoword ever again - use a password manager, don't use a free one, use a paid one. I personally use Enpass
2) 2FA everything with an Authenticator.
3) In google account, print codes to keep on paper and remove any other recovery option besides codes